main() {
  //1.算术运算符
  int a=10;
  int b=3;
  print(a+b);
  print(a-b);
  print(a*b);
  print(a/b);
  print(a~/b);
  print(a%b);
  //2.赋值运算符
  a+=b;
  print(a);
  a-=b;
  print(a);
  a*=b;
  print(a);
  print(a);
  a~/=b;
  print(a);
  a%=b;
  print(a);
//比较运算符 
  print(a==b);
  print(a!=b);
  print(a>b);
  print(a<b);
  print(a>=b);
  print(a<=b);
  //3.逻辑运算符
  print(a>b&&a<10);
  print(a>b||a<10);
  print(!(a>b));


}